A temporal model for vertical extrapolation of wind speed and wind energy assessment

In the current work by using statistical methods and available software, the wind energy assessment of prone regions for installation of wind turbines in, Qorveh, has been investigated. Information was obtained from weather stations of Baneh, Bijar, Zarina, Saqez, Sanandaj, Qorveh, and Marivan. The monthly average and maximum of wind speed were investigated between the years 2000–2010 and the related curves were drawn. The Golobad curve (direction and percentage of dominant wind and calm wind as monthly rate) between the years 1997–2000 was analyzed and drawn with plot software. The ten-minute speed (at 10, 30, and 60 m height) and direction (at 37.5 and 10 m height) wind data were collected from weather stations of Iranian new energy organization. The wind speed distribution during one year was evaluated by using Weibull probability density function (two-parametrical), and the Weibull curve histograms were drawn by MATLAB software. According to the average wind speed of stations and technical specifications of the types of turbines, the suitable wind turbine for the station was selected. Finally, the Divandareh and Qorveh sites with favorable potential were considered for installation of wind turbines and construction of wind farms.

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Kernel density estimation model for wind speed probability distribution with applicability to wind energy assessment in China

Renewable and Sustainable Energy Reviews ◽

10.1016/j.rser.2019.109387 ◽

2019 ◽

Vol 115 ◽

pp. 109387 ◽

Cited By ~ 7

Author(s):

Qinkai Han ◽

Sai Ma ◽

Tianyang Wang ◽

Fulei Chu

Keyword(s):

Wind Speed ◽

Probability Distribution ◽

Wind Energy ◽

Density Estimation ◽

Kernel Density Estimation ◽

Kernel Density ◽

Estimation Model ◽

Energy Assessment

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Wind energy assessment considering wind speed correlation in Malaysia

Renewable and Sustainable Energy Reviews ◽

10.1016/j.rser.2015.10.076 ◽

2016 ◽

Vol 54 ◽

pp. 1389-1400 ◽

Cited By ~ 21

Author(s):

H.H. Goh ◽

S.W. Lee ◽

Q.S. Chua ◽

K.C. Goh ◽

K.T.K. Teo

Keyword(s):

Wind Speed ◽

Wind Energy ◽

Energy Assessment

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Statistical and Spectral Analysis of Wind Characteristics Relevant to Wind Energy Assessment Using Tower Measurements in Complex Terrain

Journal of Wind Energy ◽

10.1155/2013/739162 ◽

2013 ◽

Vol 2013 ◽

pp. 1-12 ◽

Cited By ~ 16

Author(s):

Radian Belu ◽

Darko Koracin

Keyword(s):

Spectral Analysis ◽

Wind Speed ◽

Wind Energy ◽

Turbulence Intensity ◽

Complex Terrain ◽

Operation Management ◽

Small Range ◽

Grid Integration ◽

Energy Assessment ◽

Average Wind

The main objective of the study was to investigate spatial and temporal characteristics of the wind speed and direction in complex terrain that are relevant to wind energy assessment and development, as well as to wind energy system operation, management, and grid integration. Wind data from five tall meteorological towers located in Western Nevada, USA, operated from August 2003 to March 2008, used in the analysis. The multiannual average wind speeds did not show significant increased trend with increasing elevation, while the turbulence intensity slowly decreased with an increase were the average wind speed. The wind speed and direction were modeled using the Weibull and the von Mises distribution functions. The correlations show a strong coherence between the wind speed and direction with slowly decreasing amplitude of the multiday periodicity with increasing lag periods. The spectral analysis shows significant annual periodicity with similar characteristics at all locations. The relatively high correlations between the towers and small range of the computed turbulence intensity indicate that wind variability is dominated by the regional synoptic processes. Knowledge and information about daily, seasonal, and annual wind periodicities are very important for wind energy resource assessment, wind power plant operation, management, and grid integration.

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Wind speed probability distribution estimation and wind energy assessment

Renewable and Sustainable Energy Reviews ◽

10.1016/j.rser.2016.01.057 ◽

2016 ◽

Vol 60 ◽

pp. 881-899 ◽

Cited By ~ 74

Author(s):

Jianzhou Wang ◽

Jianming Hu ◽

Kailiang Ma

Keyword(s):

Wind Speed ◽

Probability Distribution ◽

Wind Energy ◽

Energy Assessment ◽

Distribution Estimation

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Wind Speed Distributions Used in Wind Energy Assessment: A Review

Frontiers in Energy Research ◽

10.3389/fenrg.2021.769920 ◽

2021 ◽

Vol 9 ◽

Author(s):

Huanyu Shi ◽

Zhibao Dong ◽

Nan Xiao ◽

Qinni Huang

Keyword(s):

Renewable Energy ◽

Wind Speed ◽

Wind Energy ◽

Estimation Methods ◽

Model Parameters ◽

Distribution Models ◽

Advantages And Disadvantages ◽

Speed Distribution ◽

Energy Assessment ◽

Wind Speed Distribution

With economic development and population growth, energy demand has shown an upward trend. Renewable energy is inexhaustible and causes little pollution, which has broad prospects for development. In recent years, wind energy has been developed as an essential renewable energy source. The use of wind power is very environmentally friendly and plays a critical role in economic growth. Assessing the characteristics and potential of wind energy is the first step in the effective development of wind energy. The wind speed distribution at a specific location determines the available wind energy. This paper reviews the wind speed distribution models used for wind energy assessment, and they are applicable to different wind regimes. All potential wind speed distribution models should be considered for modeling wind speed data at a particular site. Previous studies have selected several parameter estimation methods and evaluation criteria to estimate model parameters and evaluate the goodness-of-fit. This paper discusses their advantages and disadvantages. The characteristics of wind speed distribution are constantly varying geographically and temporally. Wind energy assessment should consider local geographical elements, such as local climate, topography, and thermal properties difference between the land and the sea, and focus on long-term variations in wind characteristics.

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Wind Energy Assessment of Michigan City, United States

Volume 6B: Energy ◽

10.1115/imece2018-88412 ◽

2018 ◽

Author(s):

Michael K. Okorie ◽

Uzumma O. Ozeh ◽

Xiuling Wang

Keyword(s):

United States ◽

Wind Speed ◽

Wind Energy ◽

Energy Production ◽

Alternative Energy ◽

Maximum Energy ◽

Energy Potential ◽

Average Wind Speed ◽

Energy Assessment ◽

Solar Powered

There is a growing need for an environmentally friendly source of energy that can replace the conventional fossil fuel energy. This is because the effects of global warming is becoming very obvious, as evidenced by the severe flooding that occurred in the U.S. in 20171. Two notable solutions to this dilemma are wind and solar energy. Solar powered devices derive their energy from the sun, hence, the amount of energy is severely limited during the cold months of the year when solar intensity is typically low. Wind energy, on the other hand is most prevalent during this cold months when the wind speed is typically higher. The aim of this research is therefore to conduct a comprehensive assessment of wind energy potential in Michigan City, Indiana, United States. This information will allow homeowners and investors with interest in alternative energy to make critical decisions in this regard. The study was conducted using wind speed data collected over a five-year period from 2012 to 2016. In this work, we have also determined the best method for evaluating the Weibull parameters (shape and scale factors) for wind data analysis. The site average wind speed ranged from 4m/s to 9m/s with a peak in the winter months and minimum in the summer months. The wind speed with the maximum energy at the hub height varied between 5.84 m/s in August 2016 to 12.79 m/s in October 2012 with annual average speeds between 8.85 and 9.35 m/s and a five-year average of 9.13 m/s. The prevailing wind speed was within the range of 4–8m/s and strongest on the Southern part of the site especially in the South Southeastern direction. Consequently, siting a wind turbine on the Southern part of the City would generate more energy than on any other direction. Among the turbines analyzed, ITALTECH 250 will yield the maximize energy production with a capacity factor of 0.385 and average annual energy production of 840 MWh/yr. The results presented in this work proves the great potential for investments in wind energy in Michigan City.

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Autonomous energy supply based on the wind-energy complex and hydrogen energy storage

Alternative Energy and Ecology (ISJAEE) ◽

10.15518/isjaee.2019.16-18.12-26 ◽

2019 ◽

pp. 12-26

Author(s):

S. I. Nefedkin ◽

A. O. Barsukov ◽

M. I. Mozgova ◽

M. S. Shichkov ◽

M. A. Klimova

Keyword(s):

Wind Speed ◽

Wind Energy ◽

Power Supply ◽

Energy Supply ◽

Heat Supply ◽

Hot Water ◽

Successful Implementation ◽

High Wind ◽

Wind Generators ◽

Weak Wind

The paper proposes an alternative scheme of guaranteed electricity and heat supply of an energy-insulated facility with a high potential of wind energy without the use of imported or local fuel. The scheme represents a wind power complex containing the park of wind generators located at the points with high wind potential. The wind generators provide guaranteed power supply even in periods of weak wind. For heat supply of the consumer, all surplus of the electric power goes on thermoelectric heating of water in tanks of accumulators, and also on receiving hydrogen by a method of electrolysis of water. The current heat supply is carried out with the use of hot water storage tanks, and the heat supply during the heat shortage is carried out by burning the stored hydrogen in condensing hydrogen boilers. We have developed the algorithm of calculation and the program "Wind in energy" which allows calculating annual balance of energy and picking up necessary quantity of the equipment for implementation of the scheme proceeding from the annual schedule of thermal and electric loading, and also potential of wind energy in the chosen region. The calculation-substantiation of the scheme proposed in relation to the real energy-insulated object Ust-Kamchatsk (Kamchatka) is carried out. The equipment for the implementation of an alternative energy supply scheme without the use of imported fuel is selected and compared with the traditional energy supply scheme based on a diesel power plant and a boiler house operating on imported fuel. With the introduction of an alternative power supply scheme, the equipment of the traditional scheme that has exhausted its resource can be used for backup power supply. Using climate databases, a number of energy-insulated facilities in the North and East of Russia with high wind energy potential are considered and the conditions for the successful implementation of the energy supply scheme are analyzed. This requires not only a high average annual wind speed, but also a minimum number of days of weak wind. In addition, it is necessary that the profile of the wind speed distribution in the annual section coincides with the profile of the heat load consumption.

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SHAPING OF AN AUTONOMOUS POWER SYSTEM FOR GUARANTEED POWER SUPPLY WITH THE PREDOMINANCE WIND ENERGY

Alternative Energy and Ecology (ISJAEE) ◽

10.15518/isjaee.2018.22-24.028-050 ◽

2018 ◽

pp. 28-50

Author(s):

S. G. Ignatiev ◽

S. V. Kiseleva

Keyword(s):

Energy Storage ◽

Wind Speed ◽

Wind Energy ◽

Wind Turbine ◽

Wind Turbines ◽

Energy Demand ◽

Diesel Generator ◽

Average Wind Speed ◽

Wind Speeds ◽

Average Wind

Optimization of the autonomous wind-diesel plants composition and of their power for guaranteed energy supply, despite the long history of research, the diversity of approaches and methods, is an urgent problem. In this paper, a detailed analysis of the wind energy characteristics is proposed to shape an autonomous power system for a guaranteed power supply with predominance wind energy. The analysis was carried out on the basis of wind speed measurements in the south of the European part of Russia during 8 months at different heights with a discreteness of 10 minutes. As a result, we have obtained a sequence of average daily wind speeds and the sequences constructed by arbitrary variations in the distribution of average daily wind speeds in this interval. These sequences have been used to calculate energy balances in systems (wind turbines + diesel generator + consumer with constant and limited daily energy demand) and (wind turbines + diesel generator + consumer with constant and limited daily energy demand + energy storage). In order to maximize the use of wind energy, the wind turbine integrally for the period in question is assumed to produce the required amount of energy. For the generality of consideration, we have introduced the relative values of the required energy, relative energy produced by the wind turbine and the diesel generator and relative storage capacity by normalizing them to the swept area of the wind wheel. The paper shows the effect of the average wind speed over the period on the energy characteristics of the system (wind turbine + diesel generator + consumer). It was found that the wind turbine energy produced, wind turbine energy used by the consumer, fuel consumption, and fuel economy depend (close to cubic dependence) upon the specified average wind speed. It was found that, for the same system with a limited amount of required energy and high average wind speed over the period, the wind turbines with lower generator power and smaller wind wheel radius use wind energy more efficiently than the wind turbines with higher generator power and larger wind wheel radius at less average wind speed. For the system (wind turbine + diesel generator + energy storage + consumer) with increasing average speed for a given amount of energy required, which in general is covered by the energy production of wind turbines for the period, the maximum size capacity of the storage device decreases. With decreasing the energy storage capacity, the influence of the random nature of the change in wind speed decreases, and at some values of the relative capacity, it can be neglected.

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